DeepSeek V3.1 Terminus vs DeepSeek V3.1: cost comparison
Prices updated 2026-11-06 · computed from live provider data
Short answer: DeepSeek V3.1 is cheaper on a
3:1 input/output blend — $0.453 per million tokens versus
$0.453, a 0% difference.
Both offer the same 163,840-token context window, so cost is the deciding factor.
Head to head
| DeepSeek V3.1 Terminus | DeepSeek V3.1 | |
|---|---|---|
| Input, per 1M tokens | $0.270 | $0.270 |
| Output, per 1M tokens | $1.00 | $1.00 |
| Blended 3:1, per 1M | $0.453 | $0.453 |
| Context window | 163,840 | 163,840 |
| Vendor | deepseek | gmi |
Monthly cost at real volumes
| Workload (input / output) | DeepSeek V3.1 Terminus | DeepSeek V3.1 |
|---|---|---|
| 1M in / 250K out | $0.520 | $0.520 |
| 10M in / 2.5M out | $5.20 | $5.20 |
| 100M in / 25M out | $52.00 | $52.00 |
Which should you pick?
Because the context windows are identical, the cheaper option is the better default. Choose DeepSeek V3.1 unless you are already standardised on deepseek tooling and want to avoid a second integration.